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In early 2013, tumblr suffered a data breach which resulted in the exposure of over 65 million accounts. The data was later put up for sale on a dark market website and included email addresses and passwords stored as salted SHA1 hashes.

Accounts breached: 65469298

Breached on: February 28, 2013

Exposed data: Email addresses and Passwords

Domain: tumblr.com

Added on: May 29, 2016

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